| 摘要 |
Pump group (1) for a cooling circuit, in particular for motorbikes, motor vehicles and the like, comprising a pump (1), a by-pass duct (20) and a self-regulating obturator device (30), that is to say suitable to further narrow the passage towards the exit duct (2) upon increase of the effect of the liquid coming from the pressure chamber (14) and to reduce such narrowing upon reduction of the effect of the liquid. |
